| Year | 1938 |
| Date | 15-Dec |
| Volume | 79 |
| Issue | 1,962 |
| Page | 573 |
| Category | Petrol Engine Topics |
| Part | |
| Title | Modern Developments in Engine Design. With Special Reference to Rotary-Valve Engines |
| Author | Edgar T.Westbury |
| Notes | 2 cc. rotary-valve engine by N.Boero, spark plug construction, special points about the Aspin rotary-valve (F.M.Aspin & Co.), timing of valve events, metallurgy of the Aspin valve, a model rotary-valve engine design? Other Methods of valve operation |